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There's not much point in using GST_DEBUG_FUNCPTR with GObject virtual functions such as get_property, set_propery, finalize and dispose, since they'll never be used by anyone anyway. Saves a few bytes and possibly a tenth of a polar bear.
1695 lines
51 KiB
C
1695 lines
51 KiB
C
/* GStreamer
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* Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
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* Copyright (C) 2007 Jan Schmidt <jan@fluendo.com>
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* Copyright (C) 2007 Wim Taymans <wim@fluendo.com>
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*
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* gstmultiqueue.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-multiqueue
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* @see_also: #GstQueue
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*
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* <refsect2>
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* <para>
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* Multiqueue is similar to a normal #GstQueue with the following additional
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* features:
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* <orderedlist>
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* <listitem>
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* <itemizedlist><title>Multiple streamhandling</title>
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* <listitem><para>
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* The element handles queueing data on more than one stream at once. To
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* achieve such a feature it has request sink pads (sink%d) and
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* 'sometimes' src pads (src%d).
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* </para><para>
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* When requesting a given sinkpad with gst_element_get_request_pad(),
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* the associated srcpad for that stream will be created.
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* Example: requesting sink1 will generate src1.
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* </para></listitem>
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* </itemizedlist>
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* </listitem>
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* <listitem>
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* <itemizedlist><title>Non-starvation on multiple streams</title>
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* <listitem><para>
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* If more than one stream is used with the element, the streams' queues
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* will be dynamically grown (up to a limit), in order to ensure that no
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* stream is risking data starvation. This guarantees that at any given
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* time there are at least N bytes queued and available for each individual
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* stream.
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* </para><para>
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* If an EOS event comes through a srcpad, the associated queue will be
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* considered as 'not-empty' in the queue-size-growing algorithm.
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* </para></listitem>
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* </itemizedlist>
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* </listitem>
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* <listitem>
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* <itemizedlist><title>Non-linked srcpads graceful handling</title>
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* <listitem><para>
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* In order to better support dynamic switching between streams, the multiqueue
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* (unlike the current GStreamer queue) continues to push buffers on non-linked
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* pads rather than shutting down.
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* </para><para>
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* In addition, to prevent a non-linked stream from very quickly consuming all
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* available buffers and thus 'racing ahead' of the other streams, the element
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* must ensure that buffers and inlined events for a non-linked stream are pushed
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* in the same order as they were received, relative to the other streams
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* controlled by the element. This means that a buffer cannot be pushed to a
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* non-linked pad any sooner than buffers in any other stream which were received
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* before it.
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* </para></listitem>
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* </itemizedlist>
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* </listitem>
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* </orderedlist>
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* </para>
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* <para>
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* Data is queued until one of the limits specified by the
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* #GstMultiQueue:max-size-buffers, #GstMultiQueue:max-size-bytes and/or
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* #GstMultiQueue:max-size-time properties has been reached. Any attempt to push
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* more buffers into the queue will block the pushing thread until more space
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* becomes available. #GstMultiQueue:extra-size-buffers,
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* </para>
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* <para>
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* #GstMultiQueue:extra-size-bytes and #GstMultiQueue:extra-size-time are
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* currently unused.
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* </para>
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* <para>
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* The default queue size limits are 5 buffers, 10MB of data, or
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* two second worth of data, whichever is reached first. Note that the number
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* of buffers will dynamically grow depending on the fill level of
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* other queues.
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* </para>
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* <para>
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* The #GstMultiQueue::underrun signal is emitted when all of the queues
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* are empty. The #GstMultiQueue::overrun signal is emitted when one of the
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* queues is filled.
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* Both signals are emitted from the context of the streaming thread.
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* </para>
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* </refsect2>
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*
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* Last reviewed on 2008-01-25 (0.10.17)
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstmultiqueue.h"
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/**
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* GstSingleQueue:
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* @sinkpad: associated sink #GstPad
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* @srcpad: associated source #GstPad
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*
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* Structure containing all information and properties about
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* a single queue.
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*/
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typedef struct _GstSingleQueue GstSingleQueue;
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struct _GstSingleQueue
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{
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/* unique identifier of the queue */
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guint id;
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GstMultiQueue *mqueue;
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GstPad *sinkpad;
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GstPad *srcpad;
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/* flowreturn of previous srcpad push */
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GstFlowReturn srcresult;
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/* segments */
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GstSegment sink_segment;
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GstSegment src_segment;
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/* position of src/sink */
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GstClockTime sinktime, srctime;
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/* TRUE if either position needs to be recalculated */
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gboolean sink_tainted, src_tainted;
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/* queue of data */
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GstDataQueue *queue;
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GstDataQueueSize max_size, extra_size;
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GstClockTime cur_time;
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gboolean is_eos;
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/* Protected by global lock */
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guint32 nextid; /* ID of the next object waiting to be pushed */
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guint32 oldid; /* ID of the last object pushed (last in a series) */
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GCond *turn; /* SingleQueue turn waiting conditional */
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};
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/* Extension of GstDataQueueItem structure for our usage */
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typedef struct _GstMultiQueueItem GstMultiQueueItem;
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struct _GstMultiQueueItem
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{
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GstMiniObject *object;
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guint size;
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guint64 duration;
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gboolean visible;
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GDestroyNotify destroy;
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guint32 posid;
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};
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static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue);
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static void gst_single_queue_free (GstSingleQueue * squeue);
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static void wake_up_next_non_linked (GstMultiQueue * mq);
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static void compute_high_id (GstMultiQueue * mq);
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static void single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
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static void single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (multi_queue_debug);
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#define GST_CAT_DEFAULT (multi_queue_debug)
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/* Signals and args */
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enum
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{
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SIGNAL_UNDERRUN,
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SIGNAL_OVERRUN,
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LAST_SIGNAL
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};
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/* default limits, we try to keep up to 2 seconds of data and if there is not
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* time, up to 10 MB. The number of buffers is dynamically scaled to make sure
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* there is data in the queues. Normally, the byte and time limits are not hit
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* in theses conditions. */
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#define DEFAULT_MAX_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
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#define DEFAULT_MAX_SIZE_BUFFERS 5
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#define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND
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/* second limits. When we hit one of the above limits we are probably dealing
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* with a badly muxed file and we scale the limits to these emergency values.
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* This is currently not yet implemented.
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* Since we dynamically scale the queue buffer size up to the limits but avoid
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* going above the max-size-buffers when we can, we don't really need this
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* aditional extra size. */
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#define DEFAULT_EXTRA_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
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#define DEFAULT_EXTRA_SIZE_BUFFERS 5
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#define DEFAULT_EXTRA_SIZE_TIME 3 * GST_SECOND
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#define DEFAULT_USE_BUFFERING FALSE
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#define DEFAULT_LOW_PERCENT 10
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#define DEFAULT_HIGH_PERCENT 99
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enum
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{
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PROP_0,
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PROP_EXTRA_SIZE_BYTES,
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PROP_EXTRA_SIZE_BUFFERS,
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PROP_EXTRA_SIZE_TIME,
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PROP_MAX_SIZE_BYTES,
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PROP_MAX_SIZE_BUFFERS,
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PROP_MAX_SIZE_TIME,
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PROP_USE_BUFFERING,
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PROP_LOW_PERCENT,
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PROP_HIGH_PERCENT,
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PROP_LAST
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};
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#define GST_MULTI_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
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g_mutex_lock (q->qlock); \
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} G_STMT_END
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#define GST_MULTI_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
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g_mutex_unlock (q->qlock); \
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} G_STMT_END
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static void gst_multi_queue_finalize (GObject * object);
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static void gst_multi_queue_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_multi_queue_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstPad *gst_multi_queue_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * name);
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static void gst_multi_queue_release_pad (GstElement * element, GstPad * pad);
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static void gst_multi_queue_loop (GstPad * pad);
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (multi_queue_debug, "multiqueue", 0, "multiqueue element");
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GST_BOILERPLATE_FULL (GstMultiQueue, gst_multi_queue, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static guint gst_multi_queue_signals[LAST_SIGNAL] = { 0 };
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static void
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gst_multi_queue_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details_simple (gstelement_class,
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"MultiQueue",
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"Generic", "Multiple data queue", "Edward Hervey <edward@fluendo.com>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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}
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static void
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gst_multi_queue_class_init (GstMultiQueueClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_multi_queue_set_property;
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gobject_class->get_property = gst_multi_queue_get_property;
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/* SIGNALS */
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/**
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* GstMultiQueue::underrun:
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* @multiqueue: the multqueue instance
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*
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* This signal is emitted from the streaming thread when there is
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* no data in any of the queues inside the multiqueue instance (underrun).
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*
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* This indicates either starvation or EOS from the upstream data sources.
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*/
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gst_multi_queue_signals[SIGNAL_UNDERRUN] =
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g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstMultiQueueClass, underrun), NULL, NULL,
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g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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/**
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* GstMultiQueue::overrun:
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* @multiqueue: the multiqueue instance
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*
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* Reports that one of the queues in the multiqueue is full (overrun).
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* A queue is full if the total amount of data inside it (num-buffers, time,
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* size) is higher than the boundary values which can be set through the
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* GObject properties.
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*
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* This can be used as an indicator of pre-roll.
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*/
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gst_multi_queue_signals[SIGNAL_OVERRUN] =
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g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstMultiQueueClass, overrun), NULL, NULL,
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g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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/* PROPERTIES */
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
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g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
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"Max. amount of data in the queue (bytes, 0=disable)",
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0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS,
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g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
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"Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
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DEFAULT_MAX_SIZE_BUFFERS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
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g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
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"Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
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DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_BYTES,
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g_param_spec_uint ("extra-size-bytes", "Extra Size (kB)",
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"Amount of data the queues can grow if one of them is empty (bytes, 0=disable)"
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" (NOT IMPLEMENTED)",
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0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BYTES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_BUFFERS,
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g_param_spec_uint ("extra-size-buffers", "Extra Size (buffers)",
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"Amount of buffers the queues can grow if one of them is empty (0=disable)"
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" (NOT IMPLEMENTED)",
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0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BUFFERS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_TIME,
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g_param_spec_uint64 ("extra-size-time", "Extra Size (ns)",
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"Amount of time the queues can grow if one of them is empty (in ns, 0=disable)"
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" (NOT IMPLEMENTED)",
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0, G_MAXUINT64, DEFAULT_EXTRA_SIZE_TIME,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstMultiQueue:use-buffering
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*
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* Enable the buffering option in multiqueue so that BUFFERING messages are
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* emited based on low-/high-percent thresholds.
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*
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* Since: 0.10.26
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*/
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g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
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g_param_spec_boolean ("use-buffering", "Use buffering",
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"Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
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DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstMultiQueue:low-percent
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*
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* Low threshold percent for buffering to start.
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*
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* Since: 0.10.26
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*/
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g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
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g_param_spec_int ("low-percent", "Low percent",
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"Low threshold for buffering to start", 0, 100,
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DEFAULT_LOW_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstMultiQueue:high-percent
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*
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* High threshold percent for buffering to finish.
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*
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* Since: 0.10.26
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*/
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g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
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g_param_spec_int ("high-percent", "High percent",
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"High threshold for buffering to finish", 0, 100,
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DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gobject_class->finalize = gst_multi_queue_finalize;
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_multi_queue_request_new_pad);
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gstelement_class->release_pad =
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GST_DEBUG_FUNCPTR (gst_multi_queue_release_pad);
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}
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static void
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gst_multi_queue_init (GstMultiQueue * mqueue, GstMultiQueueClass * klass)
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{
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mqueue->nbqueues = 0;
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mqueue->queues = NULL;
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mqueue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
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mqueue->max_size.visible = DEFAULT_MAX_SIZE_BUFFERS;
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mqueue->max_size.time = DEFAULT_MAX_SIZE_TIME;
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mqueue->extra_size.bytes = DEFAULT_EXTRA_SIZE_BYTES;
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mqueue->extra_size.visible = DEFAULT_EXTRA_SIZE_BUFFERS;
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mqueue->extra_size.time = DEFAULT_EXTRA_SIZE_TIME;
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mqueue->use_buffering = DEFAULT_USE_BUFFERING;
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mqueue->low_percent = DEFAULT_LOW_PERCENT;
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mqueue->high_percent = DEFAULT_HIGH_PERCENT;
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mqueue->counter = 1;
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mqueue->highid = -1;
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mqueue->nextnotlinked = -1;
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mqueue->qlock = g_mutex_new ();
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}
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static void
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gst_multi_queue_finalize (GObject * object)
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{
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GstMultiQueue *mqueue = GST_MULTI_QUEUE (object);
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g_list_foreach (mqueue->queues, (GFunc) gst_single_queue_free, NULL);
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g_list_free (mqueue->queues);
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mqueue->queues = NULL;
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mqueue->queues_cookie++;
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/* free/unref instance data */
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g_mutex_free (mqueue->qlock);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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#define SET_CHILD_PROPERTY(mq,format) G_STMT_START { \
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GList * tmp = mq->queues; \
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while (tmp) { \
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GstSingleQueue *q = (GstSingleQueue*)tmp->data; \
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q->max_size.format = mq->max_size.format; \
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tmp = g_list_next(tmp); \
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}; \
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} G_STMT_END
|
|
|
|
static void
|
|
gst_multi_queue_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMultiQueue *mq = GST_MULTI_QUEUE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_MAX_SIZE_BYTES:
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
mq->max_size.bytes = g_value_get_uint (value);
|
|
SET_CHILD_PROPERTY (mq, bytes);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
break;
|
|
case PROP_MAX_SIZE_BUFFERS:
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
mq->max_size.visible = g_value_get_uint (value);
|
|
SET_CHILD_PROPERTY (mq, visible);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
break;
|
|
case PROP_MAX_SIZE_TIME:
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
mq->max_size.time = g_value_get_uint64 (value);
|
|
SET_CHILD_PROPERTY (mq, time);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
break;
|
|
case PROP_EXTRA_SIZE_BYTES:
|
|
mq->extra_size.bytes = g_value_get_uint (value);
|
|
break;
|
|
case PROP_EXTRA_SIZE_BUFFERS:
|
|
mq->extra_size.visible = g_value_get_uint (value);
|
|
break;
|
|
case PROP_EXTRA_SIZE_TIME:
|
|
mq->extra_size.time = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_USE_BUFFERING:
|
|
mq->use_buffering = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_LOW_PERCENT:
|
|
mq->low_percent = g_value_get_int (value);
|
|
break;
|
|
case PROP_HIGH_PERCENT:
|
|
mq->high_percent = g_value_get_int (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_multi_queue_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMultiQueue *mq = GST_MULTI_QUEUE (object);
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
|
|
switch (prop_id) {
|
|
case PROP_EXTRA_SIZE_BYTES:
|
|
g_value_set_uint (value, mq->extra_size.bytes);
|
|
break;
|
|
case PROP_EXTRA_SIZE_BUFFERS:
|
|
g_value_set_uint (value, mq->extra_size.visible);
|
|
break;
|
|
case PROP_EXTRA_SIZE_TIME:
|
|
g_value_set_uint64 (value, mq->extra_size.time);
|
|
break;
|
|
case PROP_MAX_SIZE_BYTES:
|
|
g_value_set_uint (value, mq->max_size.bytes);
|
|
break;
|
|
case PROP_MAX_SIZE_BUFFERS:
|
|
g_value_set_uint (value, mq->max_size.visible);
|
|
break;
|
|
case PROP_MAX_SIZE_TIME:
|
|
g_value_set_uint64 (value, mq->max_size.time);
|
|
break;
|
|
case PROP_USE_BUFFERING:
|
|
g_value_set_boolean (value, mq->use_buffering);
|
|
break;
|
|
case PROP_LOW_PERCENT:
|
|
g_value_set_int (value, mq->low_percent);
|
|
break;
|
|
case PROP_HIGH_PERCENT:
|
|
g_value_set_int (value, mq->high_percent);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
}
|
|
|
|
static GstIterator *
|
|
gst_multi_queue_iterate_internal_links (GstPad * pad)
|
|
{
|
|
GstIterator *it = NULL;
|
|
GstPad *opad;
|
|
GstSingleQueue *squeue;
|
|
GstMultiQueue *mq = GST_MULTI_QUEUE (gst_pad_get_parent (pad));
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
squeue = gst_pad_get_element_private (pad);
|
|
if (!squeue)
|
|
goto out;
|
|
|
|
if (squeue->sinkpad == pad)
|
|
opad = gst_object_ref (squeue->srcpad);
|
|
else if (squeue->srcpad == pad)
|
|
opad = gst_object_ref (squeue->sinkpad);
|
|
else
|
|
goto out;
|
|
|
|
it = gst_iterator_new_single (GST_TYPE_PAD, opad,
|
|
(GstCopyFunction) gst_object_ref, (GFreeFunc) gst_object_unref);
|
|
|
|
gst_object_unref (opad);
|
|
|
|
out:
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
gst_object_unref (mq);
|
|
|
|
return it;
|
|
}
|
|
|
|
|
|
/*
|
|
* GstElement methods
|
|
*/
|
|
|
|
static GstPad *
|
|
gst_multi_queue_request_new_pad (GstElement * element, GstPadTemplate * temp,
|
|
const gchar * name)
|
|
{
|
|
GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
|
|
GstSingleQueue *squeue;
|
|
|
|
GST_LOG_OBJECT (element, "name : %s", GST_STR_NULL (name));
|
|
|
|
/* Create a new single queue, add the sink and source pad and return the sink pad */
|
|
squeue = gst_single_queue_new (mqueue);
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
|
|
mqueue->queues = g_list_append (mqueue->queues, squeue);
|
|
mqueue->queues_cookie++;
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
|
|
|
|
GST_DEBUG_OBJECT (mqueue, "Returning pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (squeue->sinkpad));
|
|
|
|
return squeue->sinkpad;
|
|
}
|
|
|
|
static void
|
|
gst_multi_queue_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
|
|
GstSingleQueue *sq = NULL;
|
|
GList *tmp;
|
|
|
|
GST_LOG_OBJECT (element, "pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
|
|
/* Find which single queue it belongs to, knowing that it should be a sinkpad */
|
|
for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
|
|
sq = (GstSingleQueue *) tmp->data;
|
|
|
|
if (sq->sinkpad == pad)
|
|
break;
|
|
}
|
|
|
|
if (!tmp) {
|
|
GST_WARNING_OBJECT (mqueue, "That pad doesn't belong to this element ???");
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
|
|
return;
|
|
}
|
|
|
|
/* FIXME: The removal of the singlequeue should probably not happen until it
|
|
* finishes draining */
|
|
|
|
/* remove it from the list */
|
|
mqueue->queues = g_list_delete_link (mqueue->queues, tmp);
|
|
mqueue->queues_cookie++;
|
|
|
|
/* FIXME : recompute next-non-linked */
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
|
|
|
|
/* delete SingleQueue */
|
|
gst_data_queue_set_flushing (sq->queue, TRUE);
|
|
|
|
gst_pad_set_active (sq->srcpad, FALSE);
|
|
gst_pad_set_active (sq->sinkpad, FALSE);
|
|
gst_pad_set_element_private (sq->srcpad, NULL);
|
|
gst_pad_set_element_private (sq->sinkpad, NULL);
|
|
gst_element_remove_pad (element, sq->srcpad);
|
|
gst_element_remove_pad (element, sq->sinkpad);
|
|
gst_single_queue_free (sq);
|
|
}
|
|
|
|
static gboolean
|
|
gst_single_queue_flush (GstMultiQueue * mq, GstSingleQueue * sq, gboolean flush)
|
|
{
|
|
gboolean result;
|
|
|
|
GST_DEBUG_OBJECT (mq, "flush %s queue %d", (flush ? "start" : "stop"),
|
|
sq->id);
|
|
|
|
if (flush) {
|
|
sq->srcresult = GST_FLOW_WRONG_STATE;
|
|
gst_data_queue_set_flushing (sq->queue, TRUE);
|
|
|
|
/* wake up non-linked task */
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : waking up eventually waiting task",
|
|
sq->id);
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
g_cond_signal (sq->turn);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : pausing task", sq->id);
|
|
result = gst_pad_pause_task (sq->srcpad);
|
|
sq->sink_tainted = sq->src_tainted = TRUE;
|
|
} else {
|
|
gst_data_queue_flush (sq->queue);
|
|
gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
|
|
gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
|
|
/* All pads start off not-linked for a smooth kick-off */
|
|
sq->srcresult = GST_FLOW_OK;
|
|
sq->cur_time = 0;
|
|
sq->max_size.visible = mq->max_size.visible;
|
|
sq->is_eos = FALSE;
|
|
sq->nextid = 0;
|
|
sq->oldid = 0;
|
|
gst_data_queue_set_flushing (sq->queue, FALSE);
|
|
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : starting task", sq->id);
|
|
result =
|
|
gst_pad_start_task (sq->srcpad, (GstTaskFunction) gst_multi_queue_loop,
|
|
sq->srcpad);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
update_buffering (GstMultiQueue * mq, GstSingleQueue * sq)
|
|
{
|
|
GstDataQueueSize size;
|
|
gint percent, tmp;
|
|
gboolean post = FALSE;
|
|
|
|
/* nothing to dowhen we are not in buffering mode */
|
|
if (!mq->use_buffering)
|
|
return;
|
|
|
|
gst_data_queue_get_level (sq->queue, &size);
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
|
|
G_GUINT64_FORMAT, sq->id, size.visible, sq->max_size.visible,
|
|
size.bytes, sq->max_size.bytes, sq->cur_time, sq->max_size.time);
|
|
|
|
/* get bytes and time percentages and take the max */
|
|
if (sq->is_eos) {
|
|
percent = 100;
|
|
} else {
|
|
percent = 0;
|
|
if (sq->max_size.time > 0) {
|
|
tmp = (sq->cur_time * 100) / sq->max_size.time;
|
|
percent = MAX (percent, tmp);
|
|
}
|
|
if (sq->max_size.bytes > 0) {
|
|
tmp = (size.bytes * 100) / sq->max_size.bytes;
|
|
percent = MAX (percent, tmp);
|
|
}
|
|
}
|
|
|
|
if (mq->buffering) {
|
|
post = TRUE;
|
|
if (percent >= mq->high_percent) {
|
|
mq->buffering = FALSE;
|
|
}
|
|
/* make sure it increases */
|
|
percent = MAX (mq->percent, percent);
|
|
|
|
if (percent == mq->percent)
|
|
/* don't post if nothing changed */
|
|
post = FALSE;
|
|
else
|
|
/* else keep last value we posted */
|
|
mq->percent = percent;
|
|
} else {
|
|
if (percent < mq->low_percent) {
|
|
mq->buffering = TRUE;
|
|
mq->percent = percent;
|
|
post = TRUE;
|
|
}
|
|
}
|
|
if (post) {
|
|
GstMessage *message;
|
|
|
|
/* scale to high percent so that it becomes the 100% mark */
|
|
percent = percent * 100 / mq->high_percent;
|
|
/* clip */
|
|
if (percent > 100)
|
|
percent = 100;
|
|
|
|
GST_DEBUG_OBJECT (mq, "buffering %d percent", percent);
|
|
message = gst_message_new_buffering (GST_OBJECT_CAST (mq), percent);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (mq), message);
|
|
} else {
|
|
GST_DEBUG_OBJECT (mq, "filled %d percent", percent);
|
|
}
|
|
}
|
|
|
|
/* calculate the diff between running time on the sink and src of the queue.
|
|
* This is the total amount of time in the queue.
|
|
* WITH LOCK TAKEN */
|
|
static void
|
|
update_time_level (GstMultiQueue * mq, GstSingleQueue * sq)
|
|
{
|
|
gint64 sink_time, src_time;
|
|
|
|
if (sq->sink_tainted) {
|
|
sink_time = sq->sinktime =
|
|
gst_segment_to_running_time (&sq->sink_segment, GST_FORMAT_TIME,
|
|
sq->sink_segment.last_stop);
|
|
|
|
if (G_UNLIKELY (sink_time != GST_CLOCK_TIME_NONE))
|
|
/* if we have a time, we become untainted and use the time */
|
|
sq->sink_tainted = FALSE;
|
|
} else
|
|
sink_time = sq->sinktime;
|
|
|
|
if (sq->src_tainted) {
|
|
src_time = sq->srctime =
|
|
gst_segment_to_running_time (&sq->src_segment, GST_FORMAT_TIME,
|
|
sq->src_segment.last_stop);
|
|
/* if we have a time, we become untainted and use the time */
|
|
if (G_UNLIKELY (src_time != GST_CLOCK_TIME_NONE))
|
|
sq->src_tainted = FALSE;
|
|
} else
|
|
src_time = sq->srctime;
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"queue %d, sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT, sq->id,
|
|
GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
|
|
|
|
/* This allows for streams with out of order timestamping - sometimes the
|
|
* emerging timestamp is later than the arriving one(s) */
|
|
if (G_LIKELY (sink_time != -1 && src_time != -1 && sink_time > src_time))
|
|
sq->cur_time = sink_time - src_time;
|
|
else
|
|
sq->cur_time = 0;
|
|
|
|
/* updating the time level can change the buffering state */
|
|
update_buffering (mq, sq);
|
|
|
|
return;
|
|
}
|
|
|
|
/* take a NEWSEGMENT event and apply the values to segment, updating the time
|
|
* level of queue. */
|
|
static void
|
|
apply_segment (GstMultiQueue * mq, GstSingleQueue * sq, GstEvent * event,
|
|
GstSegment * segment)
|
|
{
|
|
gboolean update;
|
|
GstFormat format;
|
|
gdouble rate, arate;
|
|
gint64 start, stop, time;
|
|
|
|
gst_event_parse_new_segment_full (event, &update, &rate, &arate,
|
|
&format, &start, &stop, &time);
|
|
|
|
/* now configure the values, we use these to track timestamps on the
|
|
* sinkpad. */
|
|
if (format != GST_FORMAT_TIME) {
|
|
/* non-time format, pretent the current time segment is closed with a
|
|
* 0 start and unknown stop time. */
|
|
update = FALSE;
|
|
format = GST_FORMAT_TIME;
|
|
start = 0;
|
|
stop = -1;
|
|
time = 0;
|
|
}
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
|
|
gst_segment_set_newsegment_full (segment, update,
|
|
rate, arate, format, start, stop, time);
|
|
|
|
if (segment == &sq->sink_segment)
|
|
sq->sink_tainted = TRUE;
|
|
else
|
|
sq->src_tainted = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"queue %d, configured NEWSEGMENT %" GST_SEGMENT_FORMAT, sq->id, segment);
|
|
|
|
/* segment can update the time level of the queue */
|
|
update_time_level (mq, sq);
|
|
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
}
|
|
|
|
/* take a buffer and update segment, updating the time level of the queue. */
|
|
static void
|
|
apply_buffer (GstMultiQueue * mq, GstSingleQueue * sq, GstClockTime timestamp,
|
|
GstClockTime duration, GstSegment * segment)
|
|
{
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
|
|
/* if no timestamp is set, assume it's continuous with the previous
|
|
* time */
|
|
if (timestamp == GST_CLOCK_TIME_NONE)
|
|
timestamp = segment->last_stop;
|
|
|
|
/* add duration */
|
|
if (duration != GST_CLOCK_TIME_NONE)
|
|
timestamp += duration;
|
|
|
|
GST_DEBUG_OBJECT (mq, "queue %d, last_stop updated to %" GST_TIME_FORMAT,
|
|
sq->id, GST_TIME_ARGS (timestamp));
|
|
|
|
gst_segment_set_last_stop (segment, GST_FORMAT_TIME, timestamp);
|
|
|
|
if (segment == &sq->sink_segment)
|
|
sq->sink_tainted = TRUE;
|
|
else
|
|
sq->src_tainted = TRUE;
|
|
|
|
/* calc diff with other end */
|
|
update_time_level (mq, sq);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_single_queue_push_one (GstMultiQueue * mq, GstSingleQueue * sq,
|
|
GstMiniObject * object)
|
|
{
|
|
GstFlowReturn result = GST_FLOW_OK;
|
|
|
|
if (GST_IS_BUFFER (object)) {
|
|
GstBuffer *buffer;
|
|
GstClockTime timestamp, duration;
|
|
GstCaps *caps;
|
|
|
|
buffer = GST_BUFFER_CAST (object);
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
duration = GST_BUFFER_DURATION (buffer);
|
|
caps = GST_BUFFER_CAPS (buffer);
|
|
|
|
apply_buffer (mq, sq, timestamp, duration, &sq->src_segment);
|
|
|
|
/* Applying the buffer may have made the queue non-full again, unblock it if needed */
|
|
gst_data_queue_limits_changed (sq->queue);
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"SingleQueue %d : Pushing buffer %p with ts %" GST_TIME_FORMAT,
|
|
sq->id, buffer, GST_TIME_ARGS (timestamp));
|
|
|
|
/* Set caps on pad before pushing, this avoids core calling the acceptcaps
|
|
* function on the srcpad, which will call acceptcaps upstream, which might
|
|
* not accept these caps (anymore). */
|
|
if (caps && caps != GST_PAD_CAPS (sq->srcpad))
|
|
gst_pad_set_caps (sq->srcpad, caps);
|
|
|
|
result = gst_pad_push (sq->srcpad, buffer);
|
|
} else if (GST_IS_EVENT (object)) {
|
|
GstEvent *event;
|
|
|
|
event = GST_EVENT_CAST (object);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_EOS:
|
|
result = GST_FLOW_UNEXPECTED;
|
|
break;
|
|
case GST_EVENT_NEWSEGMENT:
|
|
apply_segment (mq, sq, event, &sq->src_segment);
|
|
/* Applying the segment may have made the queue non-full again, unblock it if needed */
|
|
gst_data_queue_limits_changed (sq->queue);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"SingleQueue %d : Pushing event %p of type %s",
|
|
sq->id, event, GST_EVENT_TYPE_NAME (event));
|
|
|
|
gst_pad_push_event (sq->srcpad, event);
|
|
} else {
|
|
g_warning ("Unexpected object in singlequeue %d (refcounting problem?)",
|
|
sq->id);
|
|
}
|
|
return result;
|
|
|
|
/* ERRORS */
|
|
}
|
|
|
|
static GstMiniObject *
|
|
gst_multi_queue_item_steal_object (GstMultiQueueItem * item)
|
|
{
|
|
GstMiniObject *res;
|
|
|
|
res = item->object;
|
|
item->object = NULL;
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_multi_queue_item_destroy (GstMultiQueueItem * item)
|
|
{
|
|
if (item->object)
|
|
gst_mini_object_unref (item->object);
|
|
g_slice_free (GstMultiQueueItem, item);
|
|
}
|
|
|
|
/* takes ownership of passed mini object! */
|
|
static GstMultiQueueItem *
|
|
gst_multi_queue_buffer_item_new (GstMiniObject * object, guint32 curid)
|
|
{
|
|
GstMultiQueueItem *item;
|
|
|
|
item = g_slice_new (GstMultiQueueItem);
|
|
item->object = object;
|
|
item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
|
|
item->posid = curid;
|
|
|
|
item->size = GST_BUFFER_SIZE (object);
|
|
item->duration = GST_BUFFER_DURATION (object);
|
|
if (item->duration == GST_CLOCK_TIME_NONE)
|
|
item->duration = 0;
|
|
item->visible = TRUE;
|
|
return item;
|
|
}
|
|
|
|
static GstMultiQueueItem *
|
|
gst_multi_queue_event_item_new (GstMiniObject * object, guint32 curid)
|
|
{
|
|
GstMultiQueueItem *item;
|
|
|
|
item = g_slice_new (GstMultiQueueItem);
|
|
item->object = object;
|
|
item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
|
|
item->posid = curid;
|
|
|
|
item->size = 0;
|
|
item->duration = 0;
|
|
item->visible = FALSE;
|
|
return item;
|
|
}
|
|
|
|
/* Each main loop attempts to push buffers until the return value
|
|
* is not-linked. not-linked pads are not allowed to push data beyond
|
|
* any linked pads, so they don't 'rush ahead of the pack'.
|
|
*/
|
|
static void
|
|
gst_multi_queue_loop (GstPad * pad)
|
|
{
|
|
GstSingleQueue *sq;
|
|
GstMultiQueueItem *item;
|
|
GstDataQueueItem *sitem;
|
|
GstMultiQueue *mq;
|
|
GstMiniObject *object;
|
|
guint32 newid;
|
|
guint32 oldid = G_MAXUINT32;
|
|
GstFlowReturn result;
|
|
|
|
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
|
|
mq = sq->mqueue;
|
|
|
|
do {
|
|
GST_DEBUG_OBJECT (mq, "SingleQueue %d : trying to pop an object", sq->id);
|
|
|
|
/* Get something from the queue, blocking until that happens, or we get
|
|
* flushed */
|
|
if (!(gst_data_queue_pop (sq->queue, &sitem)))
|
|
goto out_flushing;
|
|
|
|
item = (GstMultiQueueItem *) sitem;
|
|
newid = item->posid;
|
|
|
|
/* steal the object and destroy the item */
|
|
object = gst_multi_queue_item_steal_object (item);
|
|
gst_multi_queue_item_destroy (item);
|
|
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : newid:%d , oldid:%d",
|
|
sq->id, newid, oldid);
|
|
|
|
/* If we're not-linked, we do some extra work because we might need to
|
|
* wait before pushing. If we're linked but there's a gap in the IDs,
|
|
* or it's the first loop, or we just passed the previous highid,
|
|
* we might need to wake some sleeping pad up, so there's extra work
|
|
* there too */
|
|
if (sq->srcresult == GST_FLOW_NOT_LINKED ||
|
|
(oldid == G_MAXUINT32) || (newid != (oldid + 1)) ||
|
|
oldid > mq->highid) {
|
|
GST_LOG_OBJECT (mq, "CHECKING sq->srcresult: %s",
|
|
gst_flow_get_name (sq->srcresult));
|
|
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
|
|
/* Update the nextid so other threads know when to wake us up */
|
|
sq->nextid = newid;
|
|
|
|
/* Update the oldid (the last ID we output) for highid tracking */
|
|
if (oldid != G_MAXUINT32)
|
|
sq->oldid = oldid;
|
|
|
|
if (sq->srcresult == GST_FLOW_NOT_LINKED) {
|
|
/* Go to sleep until it's time to push this buffer */
|
|
|
|
/* Recompute the highid */
|
|
compute_high_id (mq);
|
|
while (newid > mq->highid && sq->srcresult == GST_FLOW_NOT_LINKED) {
|
|
GST_DEBUG_OBJECT (mq, "queue %d sleeping for not-linked wakeup with "
|
|
"newid %u and highid %u", sq->id, newid, mq->highid);
|
|
|
|
|
|
/* Wake up all non-linked pads before we sleep */
|
|
wake_up_next_non_linked (mq);
|
|
|
|
mq->numwaiting++;
|
|
g_cond_wait (sq->turn, mq->qlock);
|
|
mq->numwaiting--;
|
|
|
|
GST_DEBUG_OBJECT (mq, "queue %d woken from sleeping for not-linked "
|
|
"wakeup with newid %u and highid %u", sq->id, newid, mq->highid);
|
|
}
|
|
|
|
/* Re-compute the high_id in case someone else pushed */
|
|
compute_high_id (mq);
|
|
} else {
|
|
compute_high_id (mq);
|
|
/* Wake up all non-linked pads */
|
|
wake_up_next_non_linked (mq);
|
|
}
|
|
/* We're done waiting, we can clear the nextid */
|
|
sq->nextid = 0;
|
|
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
}
|
|
|
|
GST_LOG_OBJECT (mq, "BEFORE PUSHING sq->srcresult: %s",
|
|
gst_flow_get_name (sq->srcresult));
|
|
|
|
/* Try to push out the new object */
|
|
result = gst_single_queue_push_one (mq, sq, object);
|
|
sq->srcresult = result;
|
|
|
|
if (result != GST_FLOW_OK && result != GST_FLOW_NOT_LINKED)
|
|
goto out_flushing;
|
|
|
|
GST_LOG_OBJECT (mq, "AFTER PUSHING sq->srcresult: %s",
|
|
gst_flow_get_name (sq->srcresult));
|
|
|
|
oldid = newid;
|
|
}
|
|
while (TRUE);
|
|
|
|
out_flushing:
|
|
{
|
|
/* Need to make sure wake up any sleeping pads when we exit */
|
|
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
|
|
compute_high_id (mq);
|
|
wake_up_next_non_linked (mq);
|
|
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
|
|
|
|
/* upstream needs to see fatal result ASAP to shut things down,
|
|
* but might be stuck in one of our other full queues;
|
|
* so empty this one and trigger dynamic queue growth */
|
|
if (GST_FLOW_IS_FATAL (sq->srcresult)) {
|
|
gst_data_queue_flush (sq->queue);
|
|
single_queue_underrun_cb (sq->queue, sq);
|
|
}
|
|
gst_data_queue_set_flushing (sq->queue, TRUE);
|
|
gst_pad_pause_task (sq->srcpad);
|
|
GST_CAT_LOG_OBJECT (multi_queue_debug, mq,
|
|
"SingleQueue[%d] task paused, reason:%s",
|
|
sq->id, gst_flow_get_name (sq->srcresult));
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_multi_queue_chain:
|
|
*
|
|
* This is similar to GstQueue's chain function, except:
|
|
* _ we don't have leak behavioures,
|
|
* _ we push with a unique id (curid)
|
|
*/
|
|
static GstFlowReturn
|
|
gst_multi_queue_chain (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstSingleQueue *sq;
|
|
GstMultiQueue *mq;
|
|
GstMultiQueueItem *item;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint32 curid;
|
|
GstClockTime timestamp, duration;
|
|
|
|
sq = gst_pad_get_element_private (pad);
|
|
mq = sq->mqueue;
|
|
|
|
/* Get a unique incrementing id */
|
|
curid = mq->counter++;
|
|
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : about to enqueue buffer %p with id %d",
|
|
sq->id, buffer, curid);
|
|
|
|
item = gst_multi_queue_buffer_item_new (GST_MINI_OBJECT_CAST (buffer), curid);
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
duration = GST_BUFFER_DURATION (buffer);
|
|
|
|
if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
|
|
goto flushing;
|
|
|
|
/* update time level, we must do this after pushing the data in the queue so
|
|
* that we never end up filling the queue first. */
|
|
apply_buffer (mq, sq, timestamp, duration, &sq->sink_segment);
|
|
|
|
done:
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
flushing:
|
|
{
|
|
ret = sq->srcresult;
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
|
|
sq->id, gst_flow_get_name (ret));
|
|
gst_multi_queue_item_destroy (item);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_queue_sink_activate_push (GstPad * pad, gboolean active)
|
|
{
|
|
GstSingleQueue *sq;
|
|
|
|
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
|
|
|
|
if (active) {
|
|
/* All pads start off linked until they push one buffer */
|
|
sq->srcresult = GST_FLOW_OK;
|
|
} else {
|
|
sq->srcresult = GST_FLOW_WRONG_STATE;
|
|
gst_data_queue_flush (sq->queue);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_queue_sink_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstSingleQueue *sq;
|
|
GstMultiQueue *mq;
|
|
guint32 curid;
|
|
GstMultiQueueItem *item;
|
|
gboolean res;
|
|
GstEventType type;
|
|
GstEvent *sref = NULL;
|
|
|
|
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
|
|
mq = (GstMultiQueue *) gst_pad_get_parent (pad);
|
|
|
|
type = GST_EVENT_TYPE (event);
|
|
|
|
switch (type) {
|
|
case GST_EVENT_FLUSH_START:
|
|
GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush start event",
|
|
sq->id);
|
|
|
|
res = gst_pad_push_event (sq->srcpad, event);
|
|
|
|
gst_single_queue_flush (mq, sq, TRUE);
|
|
goto done;
|
|
|
|
case GST_EVENT_FLUSH_STOP:
|
|
GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush stop event",
|
|
sq->id);
|
|
|
|
res = gst_pad_push_event (sq->srcpad, event);
|
|
|
|
gst_single_queue_flush (mq, sq, FALSE);
|
|
goto done;
|
|
case GST_EVENT_NEWSEGMENT:
|
|
/* take ref because the queue will take ownership and we need the event
|
|
* afterwards to update the segment */
|
|
sref = gst_event_ref (event);
|
|
break;
|
|
|
|
default:
|
|
if (!(GST_EVENT_IS_SERIALIZED (event))) {
|
|
res = gst_pad_push_event (sq->srcpad, event);
|
|
goto done;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Get an unique incrementing id. protected with the STREAM_LOCK, unserialized
|
|
* events already got pushed and don't end up in the queue. */
|
|
curid = mq->counter++;
|
|
|
|
item = gst_multi_queue_event_item_new ((GstMiniObject *) event, curid);
|
|
|
|
GST_DEBUG_OBJECT (mq,
|
|
"SingleQueue %d : Enqueuing event %p of type %s with id %d",
|
|
sq->id, event, GST_EVENT_TYPE_NAME (event), curid);
|
|
|
|
if (!(res = gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
|
|
goto flushing;
|
|
|
|
/* mark EOS when we received one, we must do that after putting the
|
|
* buffer in the queue because EOS marks the buffer as filled. No need to take
|
|
* a lock, the _check_full happens from this thread only, right before pushing
|
|
* into dataqueue. */
|
|
switch (type) {
|
|
case GST_EVENT_EOS:
|
|
sq->is_eos = TRUE;
|
|
/* EOS affects the buffering state */
|
|
update_buffering (mq, sq);
|
|
single_queue_overrun_cb (sq->queue, sq);
|
|
break;
|
|
case GST_EVENT_NEWSEGMENT:
|
|
apply_segment (mq, sq, sref, &sq->sink_segment);
|
|
gst_event_unref (sref);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
done:
|
|
gst_object_unref (mq);
|
|
return res;
|
|
|
|
flushing:
|
|
{
|
|
GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
|
|
sq->id, gst_flow_get_name (sq->srcresult));
|
|
if (sref)
|
|
gst_event_unref (sref);
|
|
gst_multi_queue_item_destroy (item);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_multi_queue_getcaps (GstPad * pad)
|
|
{
|
|
GstSingleQueue *sq = gst_pad_get_element_private (pad);
|
|
GstPad *otherpad;
|
|
GstCaps *result;
|
|
|
|
otherpad = (pad == sq->srcpad) ? sq->sinkpad : sq->srcpad;
|
|
|
|
GST_LOG_OBJECT (otherpad, "Getting caps from the peer of this pad");
|
|
|
|
result = gst_pad_peer_get_caps (otherpad);
|
|
if (result == NULL)
|
|
result = gst_caps_new_any ();
|
|
|
|
return result;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_multi_queue_bufferalloc (GstPad * pad, guint64 offset, guint size,
|
|
GstCaps * caps, GstBuffer ** buf)
|
|
{
|
|
GstSingleQueue *sq = gst_pad_get_element_private (pad);
|
|
|
|
return gst_pad_alloc_buffer (sq->srcpad, offset, size, caps, buf);
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_queue_src_activate_push (GstPad * pad, gboolean active)
|
|
{
|
|
GstMultiQueue *mq;
|
|
GstSingleQueue *sq;
|
|
gboolean result = FALSE;
|
|
|
|
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
|
|
mq = sq->mqueue;
|
|
|
|
GST_DEBUG_OBJECT (mq, "SingleQueue %d", sq->id);
|
|
|
|
if (active) {
|
|
result = gst_single_queue_flush (mq, sq, FALSE);
|
|
} else {
|
|
result = gst_single_queue_flush (mq, sq, TRUE);
|
|
/* make sure streaming finishes */
|
|
result |= gst_pad_stop_task (pad);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_queue_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstSingleQueue *sq = gst_pad_get_element_private (pad);
|
|
|
|
return gst_pad_push_event (sq->sinkpad, event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_queue_src_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstSingleQueue *sq = gst_pad_get_element_private (pad);
|
|
GstPad *peerpad;
|
|
gboolean res;
|
|
|
|
/* FIXME, Handle position offset depending on queue size */
|
|
|
|
/* default handling */
|
|
if (!(peerpad = gst_pad_get_peer (sq->sinkpad)))
|
|
goto no_peer;
|
|
|
|
res = gst_pad_query (peerpad, query);
|
|
|
|
gst_object_unref (peerpad);
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
no_peer:
|
|
{
|
|
GST_LOG_OBJECT (sq->sinkpad, "Couldn't send query because we have no peer");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Next-non-linked functions
|
|
*/
|
|
|
|
/* WITH LOCK TAKEN */
|
|
static void
|
|
wake_up_next_non_linked (GstMultiQueue * mq)
|
|
{
|
|
GList *tmp;
|
|
|
|
/* maybe no-one is waiting */
|
|
if (mq->numwaiting < 1)
|
|
return;
|
|
|
|
/* Else figure out which singlequeue(s) need waking up */
|
|
for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
|
|
GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
|
|
|
|
if (sq->srcresult == GST_FLOW_NOT_LINKED) {
|
|
if (sq->nextid != 0 && sq->nextid <= mq->highid) {
|
|
GST_LOG_OBJECT (mq, "Waking up singlequeue %d", sq->id);
|
|
g_cond_signal (sq->turn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* WITH LOCK TAKEN */
|
|
static void
|
|
compute_high_id (GstMultiQueue * mq)
|
|
{
|
|
/* The high-id is either the highest id among the linked pads, or if all
|
|
* pads are not-linked, it's the lowest not-linked pad */
|
|
GList *tmp;
|
|
guint32 lowest = G_MAXUINT32;
|
|
guint32 highid = G_MAXUINT32;
|
|
|
|
for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
|
|
GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
|
|
|
|
GST_LOG_OBJECT (mq, "inspecting sq:%d , nextid:%d, oldid:%d, srcresult:%s",
|
|
sq->id, sq->nextid, sq->oldid, gst_flow_get_name (sq->srcresult));
|
|
|
|
if (sq->srcresult == GST_FLOW_NOT_LINKED) {
|
|
/* No need to consider queues which are not waiting */
|
|
if (sq->nextid == 0) {
|
|
GST_LOG_OBJECT (mq, "sq:%d is not waiting - ignoring", sq->id);
|
|
continue;
|
|
}
|
|
|
|
if (sq->nextid < lowest)
|
|
lowest = sq->nextid;
|
|
} else if (sq->srcresult != GST_FLOW_UNEXPECTED) {
|
|
/* If we don't have a global highid, or the global highid is lower than
|
|
* this single queue's last outputted id, store the queue's one,
|
|
* unless the singlequeue is at EOS (srcresult = UNEXPECTED) */
|
|
if ((highid == G_MAXUINT32) || (sq->oldid > highid))
|
|
highid = sq->oldid;
|
|
}
|
|
}
|
|
|
|
if (highid == G_MAXUINT32 || lowest < highid)
|
|
mq->highid = lowest;
|
|
else
|
|
mq->highid = highid;
|
|
|
|
GST_LOG_OBJECT (mq, "Highid is now : %u, lowest non-linked %u", mq->highid,
|
|
lowest);
|
|
}
|
|
|
|
#define IS_FILLED(q, format, value) (((q)->max_size.format) != 0 && \
|
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((q)->max_size.format) <= (value))
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/*
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* GstSingleQueue functions
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*/
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static void
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single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
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{
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GstMultiQueue *mq = sq->mqueue;
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GList *tmp;
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GstDataQueueSize size;
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gboolean filled = FALSE;
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gst_data_queue_get_level (sq->queue, &size);
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GST_LOG_OBJECT (mq, "Single Queue %d is full", sq->id);
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GST_MULTI_QUEUE_MUTEX_LOCK (mq);
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for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
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GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
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GstDataQueueSize ssize;
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GST_LOG_OBJECT (mq, "Checking Queue %d", oq->id);
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if (gst_data_queue_is_empty (oq->queue)) {
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GST_LOG_OBJECT (mq, "Queue %d is empty", oq->id);
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if (IS_FILLED (sq, visible, size.visible)) {
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sq->max_size.visible = size.visible + 1;
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GST_DEBUG_OBJECT (mq,
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"Another queue is empty, bumping single queue %d max visible to %d",
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sq->id, sq->max_size.visible);
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}
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
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goto beach;
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}
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/* check if we reached the hard time/bytes limits */
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gst_data_queue_get_level (oq->queue, &ssize);
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GST_DEBUG_OBJECT (mq,
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"queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
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G_GUINT64_FORMAT, oq->id, ssize.visible, oq->max_size.visible,
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ssize.bytes, oq->max_size.bytes, oq->cur_time, oq->max_size.time);
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/* if this queue is filled completely we must signal overrun.
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* FIXME, this seems wrong in many ways
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* - we're comparing the filled level of this queue against the
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* values of the other one
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* - we should only do this after we found no empty queues, ie, move
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* this check outside of the loop
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* - the debug statement talks about a different queue than the one
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* we are checking here.
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*/
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if (sq->is_eos || IS_FILLED (sq, bytes, ssize.bytes) ||
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IS_FILLED (sq, time, sq->cur_time)) {
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GST_LOG_OBJECT (mq, "Queue %d is filled", oq->id);
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filled = TRUE;
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}
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}
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/* no queues were empty */
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
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/* Overrun is always forwarded, since this is blocking the upstream element */
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if (filled) {
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GST_DEBUG_OBJECT (mq, "A queue is filled, signalling overrun");
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g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
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}
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beach:
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return;
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}
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static void
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single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
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{
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gboolean empty = TRUE;
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GstMultiQueue *mq = sq->mqueue;
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GList *tmp;
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GST_LOG_OBJECT (mq,
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"Single Queue %d is empty, Checking other single queues", sq->id);
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GST_MULTI_QUEUE_MUTEX_LOCK (mq);
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for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
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GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
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if (gst_data_queue_is_full (oq->queue)) {
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GstDataQueueSize size;
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gst_data_queue_get_level (oq->queue, &size);
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if (IS_FILLED (oq, visible, size.visible)) {
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oq->max_size.visible = size.visible + 1;
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GST_DEBUG_OBJECT (mq,
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"queue %d is filled, bumping its max visible to %d", oq->id,
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oq->max_size.visible);
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gst_data_queue_limits_changed (oq->queue);
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}
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}
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if (!gst_data_queue_is_empty (oq->queue))
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empty = FALSE;
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}
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
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if (empty) {
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GST_DEBUG_OBJECT (mq, "All queues are empty, signalling it");
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g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_UNDERRUN], 0);
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}
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}
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static gboolean
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single_queue_check_full (GstDataQueue * dataq, guint visible, guint bytes,
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guint64 time, GstSingleQueue * sq)
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{
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gboolean res;
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GstMultiQueue *mq = sq->mqueue;
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GST_DEBUG_OBJECT (mq,
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"queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
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G_GUINT64_FORMAT, sq->id, visible, sq->max_size.visible, bytes,
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sq->max_size.bytes, sq->cur_time, sq->max_size.time);
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/* we are always filled on EOS */
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if (sq->is_eos)
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return TRUE;
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/* we never go past the max visible items unless we are in buffering mode */
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if (!mq->use_buffering && IS_FILLED (sq, visible, visible))
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return TRUE;
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/* check time or bytes */
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res = IS_FILLED (sq, time, sq->cur_time) || IS_FILLED (sq, bytes, bytes);
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return res;
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}
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static void
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gst_single_queue_free (GstSingleQueue * sq)
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{
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/* DRAIN QUEUE */
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gst_data_queue_flush (sq->queue);
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g_object_unref (sq->queue);
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g_cond_free (sq->turn);
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g_free (sq);
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}
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static GstSingleQueue *
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gst_single_queue_new (GstMultiQueue * mqueue)
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{
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GstSingleQueue *sq;
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gchar *tmp;
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sq = g_new0 (GstSingleQueue, 1);
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GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
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sq->id = mqueue->nbqueues++;
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/* copy over max_size and extra_size so we don't need to take the lock
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* any longer when checking if the queue is full. */
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sq->max_size.visible = mqueue->max_size.visible;
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sq->max_size.bytes = mqueue->max_size.bytes;
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sq->max_size.time = mqueue->max_size.time;
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sq->extra_size.visible = mqueue->extra_size.visible;
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sq->extra_size.bytes = mqueue->extra_size.bytes;
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sq->extra_size.time = mqueue->extra_size.time;
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
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GST_DEBUG_OBJECT (mqueue, "Creating GstSingleQueue id:%d", sq->id);
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sq->mqueue = mqueue;
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sq->srcresult = GST_FLOW_WRONG_STATE;
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sq->queue = gst_data_queue_new_full ((GstDataQueueCheckFullFunction)
|
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single_queue_check_full,
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(GstDataQueueFullCallback) single_queue_overrun_cb,
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(GstDataQueueEmptyCallback) single_queue_underrun_cb, sq);
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sq->is_eos = FALSE;
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gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
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gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
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sq->nextid = 0;
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sq->oldid = 0;
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sq->turn = g_cond_new ();
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sq->sinktime = GST_CLOCK_TIME_NONE;
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|
sq->srctime = GST_CLOCK_TIME_NONE;
|
|
sq->sink_tainted = TRUE;
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|
sq->src_tainted = TRUE;
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tmp = g_strdup_printf ("sink%d", sq->id);
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|
sq->sinkpad = gst_pad_new_from_static_template (&sinktemplate, tmp);
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|
g_free (tmp);
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gst_pad_set_chain_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_chain));
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|
gst_pad_set_activatepush_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_sink_activate_push));
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|
gst_pad_set_event_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_sink_event));
|
|
gst_pad_set_getcaps_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_getcaps));
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|
gst_pad_set_bufferalloc_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_bufferalloc));
|
|
gst_pad_set_iterate_internal_links_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
|
|
|
|
tmp = g_strdup_printf ("src%d", sq->id);
|
|
sq->srcpad = gst_pad_new_from_static_template (&srctemplate, tmp);
|
|
g_free (tmp);
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|
gst_pad_set_activatepush_function (sq->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_src_activate_push));
|
|
gst_pad_set_getcaps_function (sq->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_getcaps));
|
|
gst_pad_set_event_function (sq->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_src_event));
|
|
gst_pad_set_query_function (sq->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_src_query));
|
|
gst_pad_set_iterate_internal_links_function (sq->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
|
|
|
|
gst_pad_set_element_private (sq->sinkpad, (gpointer) sq);
|
|
gst_pad_set_element_private (sq->srcpad, (gpointer) sq);
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|
|
|
/* only activate the pads when we are not in the NULL state
|
|
* and add the pad under the state_lock to prevend state changes
|
|
* between activating and adding */
|
|
g_static_rec_mutex_lock (GST_STATE_GET_LOCK (mqueue));
|
|
if (GST_STATE_TARGET (mqueue) != GST_STATE_NULL) {
|
|
gst_pad_set_active (sq->srcpad, TRUE);
|
|
gst_pad_set_active (sq->sinkpad, TRUE);
|
|
}
|
|
gst_element_add_pad (GST_ELEMENT (mqueue), sq->srcpad);
|
|
gst_element_add_pad (GST_ELEMENT (mqueue), sq->sinkpad);
|
|
g_static_rec_mutex_unlock (GST_STATE_GET_LOCK (mqueue));
|
|
|
|
GST_DEBUG_OBJECT (mqueue, "GstSingleQueue [%d] created and pads added",
|
|
sq->id);
|
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|
|
return sq;
|
|
}
|